Why does the top of a mountain appear bright on a SAR (radar) image.I know that the peak of a mountain is subject to a layover effect, thus appearing closer on the radar image than the bottom part of the mountain. And, that the back part of a mountain is dark (shadow) because it is not reached by radar's radiations.
The only reason I see that makes the top of a mountain look brighter than the bottom part is because the slope of the mountain is narrower on slant range compared to its real dimensions on ground range. This implies that backscatter return from many objects is returned inside the same cell (more intensity). But I'm not sure if that is really the exact reason.
See Sentinel-1 SAR image of mountain (to understand what I'm talking about):
Thanks.
أكثر...
The only reason I see that makes the top of a mountain look brighter than the bottom part is because the slope of the mountain is narrower on slant range compared to its real dimensions on ground range. This implies that backscatter return from many objects is returned inside the same cell (more intensity). But I'm not sure if that is really the exact reason.
See Sentinel-1 SAR image of mountain (to understand what I'm talking about):
Thanks.
أكثر...